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How Magnesium Helps with Sleep and Anxiety

Restore Hyper Wellness Writer
Written by:
Restore Hyper Wellness Writer
Reviewed by Restore Medical Team
Reviewed by:
Reviewed by Restore Medical Team
7 minute read
January 21, 2026
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Magnesium plays a subtle yet powerful role in supporting sleep and well-being. 

In our busy, modern lives, there is rarely any room for stillness. The constant stream of distractions—whether from our phones, loved ones or bosses—makes it hard to pause and simply be present. However, keeping Magnesium levels healthy can help your mind relax and curb the edge caused by the world’s constant stimulation.

Magnesium is a crucial mineral that helps regulate various bodily functions. It is particularly essential for regulating the nervous system, which plays a significant role in our ability to relax, unwind and manage stress. Maintaining optimal magnesium levels has been linked to less stress and improved sleep quality.

This article will explore how Magnesium may support sleep and reduce stress, its limitations and how to take it responsibly.

Highlights:

  • Magnesium supports sleep and relaxation by calming the nervous system and aiding muscle relaxation, with some forms linked to improved sleep quality over several weeks.
  • Low Magnesium is associated with higher stress and anxiety, and supplementation may help reduce mild symptoms by supporting stress-hormone regulation, though evidence is still emerging.
  • Bioavailability matters: oral Magnesium has limited absorption, while IV Magnesium delivers 100% bioavailability under medical supervision as a complementary wellness option.

The Benefits of Magnesium 

Magnesium is an essential coenzyme that supports hundreds of crucial processes in your body, including muscle function, metabolism and nervous system regulation. 

How Magnesium Supports Sleep

Struggling with sleep? Magnesium can help the body relax before bedtime, promoting better sleep. It also supports muscle relaxation and widening blood vessels, contributing to a sense of calm that may, indirectly, improve sleep.

While not a miracle cure or replacement for sleep medication, it can help set you on the right path for a better night. 

One study showed that adults who struggled with poor sleep experienced improvements in sleep after taking Magnesium (bisglycinate).1 Another study of adults with self-reported sleep issues found that Magnesium (L‑threonate) improved “deep” sleep and REM scores, as well as how they felt and functioned during the day.2

How Magnesium May Support Stress and Anxiety

Magnesium is linked to stress and anxiety, due to its role in the nervous system and hormone pathways (particularly adrenaline and cortisol, aka “the stress hormone”). Some studies have suggested that Magnesium supplements may help to reduce stress and anxiety symptoms; however, evidence is emerging rather than definitive. Let’s get into it.

People with lower Magnesium levels are more likely to report higher anxiety symptoms, according to research. Studies suggest that taking Magnesium supplements may help some people with mild anxiety symptoms, but results are mixed and more research is needed to draw definitive conclusions.3 It’s important to note that these studies examine subjective or mild anxiety symptoms, rather than clinically diagnosed anxiety disorders.

Magnesium has been shown to help the brain “unlearn” fearful responses to certain situations. This suggests that Magnesium may help the brain cope with stress and regulate fear or anxiety. However, the findings come from an animal study involving rats, and we don’t know if the same impact will be replicated in humans. This should instead be seen as a potential benefit.

Low Magnesium levels have also been linked to increased stress, and chronic stress can actually reduce Magnesium levels in the body. This has been described by researchers as a “vicious circle.”4 Increasing Magnesium levels may help interrupt this negative stress cycle. One randomized trial in healthy adults with low Magnesium levels found that taking Magnesium lowered perceived stress scores over an eight-week period.5 

However, we lack stress-specific research. Many existing studies combine stress and anxiety together, focusing more on the latter. This means evidence looking solely at the impact on stress is emerging rather than conclusive.

All things considered, Magnesium should be seen as a complementary therapy alongside other lifestyle changes, rather than a wonder cure or replacement for medication. 

Understanding Magnesium Deficiency and Risk Factors

Magnesium plays a crucial part in many of the body’s functions, including energy production, DNA synthesis, nerve signalling and muscle function. This broad range of influence is why Magnesium is associated with so many health benefits.

Many people are deficient in Magnesium, and it’s estimated to affect between 2.5% to 15% of Americans. That said, it could be higher as signs of Magnesium deficiency don’t appear until levels are extremely low.

Early symptoms of Magnesium deficiency can include tiredness, weakness, nausea and loss of appetite, before developing into muscle cramps, numbness and mood changes. 

Some groups are more vulnerable to Magnesium deficiency. These include:

  • Older adults
  • People with type 2 diabetes
  • Individuals with gastrointestinal issues
  • Those who have an alcohol use disorder
  • Conditions that increase nutrient loss or limit absorption (celiac disease, Crohn’s disease, etc)

How To Maintain Healthy Magnesium Levels

Maintaining Magnesium levels is linked to a variety of health benefits, including reduced stress, less anxiety and better quality sleep. Keeping Magnesium at optimal levels is a matter of consuming adequate quantities either through food, supplements or clinical support. Ensuring your body is set up effectively to absorb (and hold on to) Magnesium is key to maximizing its impact.

Eat More Magnesium-Rich Foods

Magnesium-rich foods are a brilliant source of Magnesium, as approximately 30% to 40% of Magnesium in food will be absorbed by the body. 

Foods rich in Magnesium include dark leafy greens, oily fish, nuts, seeds, bananas, whole grains and yogurt (and more). If you can’t remember them all, a cheat is: generally, foods high in fiber tend to be a good place to start. Breakfast is a great place to kickstart your Magnesium intake, as it is often added to fortified cereals and milk.

‍‍Why Magnesium Source and Absorption Matter

Magnesium absorption varies among individuals and can vary significantly depending on the type of Magnesium and the delivery method, as well as individual factors such as diet and digestive health.6

To assess the effectiveness of an oral supplement, consider the type of Magnesium and its absorption rate. 

Magnesium Sulfate and IV Drip Therapy at Restore

IV Drip Therapy delivers Magnesium Sulfate directly into the bloodstream, providing 100% bioavailability so it can get to work straight away. By comparison, oral supplements offer an absorption rate of just 15-20%.

Restore’s IV Drips are delivered under medical supervision and as part of a science-backed wellness plan. This means they’re safe and effective, allowing clients to relax. You can also customize your Drip with your Nurse to deliver more beneficial nutrients for your mind and body.

Avoid the risks of deficiency by getting enough Magnesium through food, supplements and by booking your IV Therapy appointment at Restore.

FAQs: Magnesium for Sleep and Anxiety

1. How long does it take to notice benefits from Magnesium for sleep or stress?

Some people report feeling more relaxed and winding down more easily; however, this is largely anecdotal. Most clinical trials focus on three to eight weeks, rather than on immediate effects. Research has shown moderate improvements in sleep quality and stress/anxiety levels.

2. Is Magnesium helpful for occasional sleep trouble or chronic sleep issues?

Studies on Magnesium and sleep have examined its effects over several weeks of consistent use. While there is currently no scientific evidence exploring whether it helps with occasional sleep problems, some people anecdotally report feeling more relaxed within a few hours of taking it, which may help with sleep.

3. Why might some people not respond to oral Magnesium?

Not all of the oral Magnesium taken will reach the bloodstream. Typically, the body absorbs about 15-20% of an oral supplement. Because oral Magnesium needs to be absorbed by the gut, certain medications and conditions that cause malabsorption (such as Crohn’s disease and celiac disease) can affect how well it works.

5. How does IV Drip Therapy Magnesium fit into a broader sleep and stress routine?

IV Drip Therapy is a time-effective way to deliver Magnesium into the bloodstream to support sleep, stress and anxiety. It should be seen as an effective addition to your wellness routine, not a replacement for healthy lifestyle choices, and definitely not for prescription medication. 

Medical services are provided by an independently-owned physician practice. Some services may require medical clearance and a prescription. We reserve the right to refuse service to anyone. Services, therapies, ingredients and prices may vary per location. The content on our site, blog posts, educational materials, app, promotional newsletters and any other written content are not intended to replace an evaluation with a qualified healthcare professional and are not intended as medical advice.

Citations

  1. Schuster, J., Cycelskij, I., Lopresti, A., & Hahn, A. (2025). Magnesium Bisglycinate Supplementation in Healthy Adults Reporting Poor Sleep: A Randomized, Placebo-Controlled Trial. Nature and science of sleep, 17, 2027–2040. https://doi.org/10.2147/NSS.S524348
  2. Hausenblas, H. A., Lynch, T., Hooper, S., Shrestha, A., Rosendale, D., & Gu, J. (2024). Magnesium-L-threonate improves sleep quality and daytime functioning in adults with self-reported sleep problems: A randomized controlled trial. Sleep medicine: X, 8, 100121. https://doi.org/10.1016/j.sleepx.2024.100121
  3. Boyle, N. B., Lawton, C., & Dye, L. (2017). The Effects of Magnesium Supplementation on Subjective Anxiety and Stress: A Systematic Review. Nutrients, 9(5), 429. https://doi.org/10.3390/nu9050429
  4. Pickering, G., Mazur, A., Trousselard, M., Bienkowski, P., Yaltsewa, N., Amessou, M., Noah, L., & Pouteau, E. (2020). Magnesium Status and Stress: The Vicious Circle Concept Revisited. Nutrients, 12(12), 3672. https://doi.org/10.3390/nu12123672
  5. Pouteau, E., Kabir-Ahmadi, M., Noah, L., Mazur, A., Dye, L., Hellhammer, J., Pickering, G., & Dubray, C. (2018). Superiority of magnesium and vitamin B6 over magnesium alone on severe stress in healthy adults with low magnesemia: A randomized, single-blind clinical trial. PloS one, 13(12), e0208454. https://doi.org/10.1371/journal.pone.0208454
  6. Pardo, M. R., Garicano Vilar, E., San Mauro Martín, I., & Camina Martín, M. A. (2021). Bioavailability of magnesium food supplements: A systematic review. Nutrition (Burbank, Los Angeles County, Calif.), 89, 111294. https://doi.org/10.1016/j.nut.2021.111294

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